Website Disaster!!!

It is 11:00 Pm EST and I just made a big mess of my website! I just want to shrivel and die. I had a new template installed and everything was fine and dandy a few minutes ago and I was trying to put in the Paypal logo and my biggest nightmare just came true. When I do some changes or additions (I haven't for a long time) I usually leave two similar windows open. If I made a mistake I would just go to the first window, update it and it would revert back to the original. This time though my brain wasn't functioning properly and I got confused. I have been working with my web designer most of the day and I guess it got to a point that my brain got fried. I just emailed her and hopefully will get back with me soon. I feel so embarrassed as she had been so helpful and patient with me today. I surely will have a restless night!